Diagnosis System

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: DIAGNOSIS SYSTEM

1. CHECK DLC3

(a) The ECU uses ISO 15765-4 for communication. The terminal arrangement of the DLC3 complies with SAE J1962 and matches the ISO 15765-4 format.









NOTICE:
*: Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the power switch or any other switches or the doors.

(b) If the result is not as specified, the DLC3 may have a malfunction. Repair or replace the harness or connector.

HINT
Connect the Techstream to the DLC3, turn the power switch on (IG) and attempt to use the Techstream. If the display indicates that a communication error has occurred, there is a problem either with the vehicle or with the Techstream.

* If communication is normal when the Techstream is connected to another vehicle, inspect the DLC3 of the original vehicle.
* If communication is still not possible when the Techstream is connected to another vehicle, the problem may be in the Techstream itself. Consult the Service Department listed in the Techstream operator's manual.
2. CHECK WARNING LIGHT

(a) When a problem occurs in the power steering system, the P/S warning light on the combination meter comes on to inform the driver of the problem.





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